I'm guessing that the alarm threshold coded in Nagios is set to alarm on a value without regard to number of cores. I'd have a look at the scripts and make adjustments such that the number of cores is taken into account.
I just peeked at one of our larger machines (255 cores) which is showing this load average:
Depending on the sophistication of the scheduler, it is very possible to end up with a machine that is more heavily loaded. It's also possible that the load is more evenly balanced than it appears from the Nagios alarms, but the other machines are just running under the threshold value.
Hi,
I am seeing very high kernel usage and very high load averages on my system (Although we are not loading much data to our database). Here is the output of top...does anyone know what i should be looking at?
Thanks,
Lorraine
last pid: 13144; load averages: 22.32, 19.81, 16.78 ... (4 Replies)
we have an unix system which has
load average normally about 20.
but while i am running a particular unix batch which performs heavy
operations on filesystem and database average load
reduces to 15.
how can we explain this situation?
while running that batch idle cpu time is about %60-65... (0 Replies)
Hi Buddies,
Thanx for reading my first post...
After googling a lot and searching so many forums I am feeling down a bit...
Please don't mind my ignorence, and my grammer ... :)
My server is running RHEL 2.6.9-5.EL. The cpu load is going higher than roof, almost 100 sometimes.
I am... (2 Replies)
Hello AlL,..
I want from experts to help me as my load average is increased and i dont know where is the problem !!
this is my top result :
root@a4s # top
top - 11:30:38 up 40 min, 1 user, load average: 3.06, 2.49, 4.66
Mem: 8168788k total, 2889596k used, 5279192k free, 47792k... (3 Replies)
Hi All,
Please see to the prstat o/p of one of my sun box..
Total: 1 processes, 68 lwps, load averages: 531.00, 305.18, 144.77 Check the pstack ....
As i have read in all docs , people say a value of 5 is considered high CPU usage , i don't know then how we can even relate those... (3 Replies)
i have a Intel Quad Core Xeon X3440 (4 x 2.53GHz, 8MB Cache, Hyper Threaded) with 16gig and 1tb harddrive with a 1gb port and my apache is causing my cpu to go up to 100% on all four cores heres my http.config
<IfModule prefork.c>
StartServers 10
MinSpareServers 10
MaxSpareServers 15... (4 Replies)
With linux kernel 2.4.22-1.2199.nptlsmp (I know, it's very old) Sometimes Load average increases to big value (over 7) but my 4 vCPU are in
idle state (5% busy every cpu). My web procedure was gone down so I found out that process (with 4732 process id, see my following output)
was in... (4 Replies)
hostinfo(8) BSD System Manager's Manual hostinfo(8)NAME
hostinfo -- host information
SYNOPSIS
hostinfo
DESCRIPTION
The hostinfo command displays information about the host system on which the command is executing. The output includes a kernel version
description, processor configuration data, available physical memory, and various scheduling statistics.
OPTIONS
There are no options.
DISPLAY
Mach kernel version:
The version string compiled into the kernel executing on the host system.
Processor Configuration:
The maximum possible processors for which the kernel is configured, followed by the number of physical and logical processors avail-
able.
Note: on Intel architectures, physical processors are referred to as cores, and logical processors are referred to as hardware threads;
there may be multiple logical processors per core and multiple cores per processor package. This command does not report the number of
processor packages.
Processor type:
The host's processor type and subtype.
Processor active:
A list of active processors on the host system. Active processors are members of a processor set and are ready to dispatch threads.
On a single processor system, the active processor, is processor 0.
Primary memory available:
The amount of physical memory that is configured for use on the host system.
Default processor set:
Displays the number of tasks currently assigned to the host processor set, the number of threads currently assigned to the host proces-
sor set, and the number of processors included in the host processor set.
Load average:
Measures the average number of threads in the run queue.
Mach factor:
A variant of the load average which measures the processing resources available to a new thread. Mach factor is based on the number of
CPUs divided by (1 + the number of runnablethreads) or the number of CPUs minus the number of runnable threads when the number of
runnable threads is less than the number of CPUs. The closer the Mach factor value is to zero, the higher the load. On an idle system
with a fixed number of active processors, the mach factor will be equal to the number of CPUs.
SEE ALSO sysctl(8)Mac OS X October 30, 2003 Mac OS X